中国物理B ›› 2012, Vol. 21 ›› Issue (8): 87501-087501.doi: 10.1088/1674-1056/21/8/087501

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Wiedemann effect of Fe–Ga based magnetostrictive wires

李纪恒, 高学绪, 朱洁, 包小倩, 程亮, 谢建新   

  1. State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
  • 收稿日期:2011-12-04 修回日期:2011-12-31 出版日期:2012-07-01 发布日期:2012-07-01
  • 基金资助:
    Project supported by the State Key Development Program for Basic Research of China (Grant No. 2011CB606304), the National Natural Science Foundation for Postdoctoral Scientists of China (Grant No. 2011M500229), and the Program for New Century Excellent Talents in University, China (Grant No. NCET-09-02120).

Wiedemann effect of Fe–Ga based magnetostrictive wires

Li Ji-Heng (李纪恒), Gao Xue-Xu (高学绪), Zhu Jie (朱洁), Bao Xiao-Qian (包小倩), Cheng Liang (程亮), Xie Jian-Xin (谢建新 )   

  1. State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
  • Received:2011-12-04 Revised:2011-12-31 Online:2012-07-01 Published:2012-07-01
  • Contact: Gao Xue-Xu E-mail:gaox@skl.ustb.edu.cn
  • Supported by:
    Project supported by the State Key Development Program for Basic Research of China (Grant No. 2011CB606304), the National Natural Science Foundation for Postdoctoral Scientists of China (Grant No. 2011M500229), and the Program for New Century Excellent Talents in University, China (Grant No. NCET-09-02120).

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摘要： (Fe83Ga17)98Cr2 wires each with a diameter of 0.7 mm are prepared by hot swaging and warm drawing from the casting rods directly, because the ductility of Fe83Ga17 alloy is improved by adding Cr element. The Wiedemann twists and dependences on magnetostrictions of Fe83Ga17 and (Fe83Ga17)98Cr2 wires are investigated. The largest observed Wiedemann twists of 245 s·cm-1 and 182 s·cm-1 are detected in the annealed Fe83Ga17 and (Fe83Ga17)98Cr2 wires, respectively. The magnetostrictions of the annealed Fe83Ga17 and (Fe83Ga17)98Cr2 wires are 160 ppm and 107 ppm, respectively. The maximum of Wiedemann twist increases with magnetostriction increasing. However the magnetostriction is just an important factor that affects the Wiedemann effect of alloy wire, and the relationship between magnetostriction and Wiedemann effect is a complex function rather than a simple function.

关键词: Fe-Ga alloy, wires, Wiedemann effect, magnetostriction

Abstract: (Fe83Ga17)98Cr2 wires each with a diameter of 0.7 mm are prepared by hot swaging and warm drawing from the casting rods directly, because the ductility of Fe83Ga17 alloy is improved by adding Cr element. The Wiedemann twists and dependences on magnetostrictions of Fe83Ga17 and (Fe83Ga17)98Cr2 wires are investigated. The largest observed Wiedemann twists of 245 s·cm-1 and 182 s·cm-1 are detected in the annealed Fe83Ga17 and (Fe83Ga17)98Cr2 wires, respectively. The magnetostrictions of the annealed Fe83Ga17 and (Fe83Ga17)98Cr2 wires are 160 ppm and 107 ppm, respectively. The maximum of Wiedemann twist increases with magnetostriction increasing. However the magnetostriction is just an important factor that affects the Wiedemann effect of alloy wire, and the relationship between magnetostriction and Wiedemann effect is a complex function rather than a simple function.

Key words: Fe-Ga alloy, wires, Wiedemann effect, magnetostriction

中图分类号:  (Metals and alloys)

  • 75.20.En
75.80.+q (Magnetomechanical effects, magnetostriction) 81.40.Lm (Deformation, plasticity, and creep) 81.40.Rs (Electrical and magnetic properties related to treatment conditions)